Do you believe in horoscope , especially for marriage ?

Did you heard that in Bollywood? Aishwary Rai & Abhishek Bachchan's romance confirmed. If they marry it could have negative influence on their lives according to their horoscope. To make sure they are compatible, the dozens of priests performed the rituals with great zeal.
Do you believe in such horoscope & such rituals ? I wonder will it really work ?